Flushing-cistern.



R. H. PAUS.

FLUSHING CISTERN.

APPLICATION FILED MAY 24, ms.

1,Q43,34. Patented Oct. 16, 1917;

3 SHEETSSHEET I.

I /\/[TNES5ES INYENTOR Patented Oct. 16,1917.

3 SHEETSSHEET 2.

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INVENTOQ WITNESSE R. H. PAUS.

FLUSHING CISTERN.

APPLICATION men MAY 24. 1915.

Lziasfiq Patented Oct. 16,1917.

3 SHEETSSHEEI' 3- \NlTNESSES [NVENTOR .j the chamber and theconsiderable length of RUDOLPH HENRIK Paris, or sHiPLEY, ENGLAND.

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To all whom it may concern;

Be it known that I, RUDOLPH HENRIK PAUS, a subject of the King ofEngland, and residing at Shipley, in Yorkshire and .the Kingdom ofEngland, have invented cer-v tain new and useful Improvements inFlushing-cisterns, of which the following is a specification. Y

This invention relates to flushing cisterns of the siphon type for waterclosets, urinals, and other appliances and has for its chief object toproduce a cistern which will be absolutely silent in its action. Variousdevices have been proposed with a view to efi'ecting this object suchfor example as one or more pipes or passages of small bore which enterthe siphon at or about its highest level and extend to within a shortdistance above the level of the siphon inlet aperture. Apparatus of thiskind while efl'ecting great improvements over the ordinary siphoncistern is not absolutely silent as there is still a certain amount ofnoise produced by the inrush of air through the small pipe or pipes asthe water level in the cistern arrives at and falls below the end orends of such pipes.

According to this invention in order to eliminate this last mentionedobjection an airpipe is employed which extends above the highest waterlevel and opens to the atmosphere directly, or throughthe interventionof a silencer or if desired such a pipe entering the short leg of thesiphon or terminating. in an open chamber and occupying a positionslightly above the lower end or ends of the aforesaid silencing pipes,the arrangement being such that as the water level J; in the cisternfalls during a flushing operation it falls simultaneously in the airpipe and chamber and opens such chamberto the atmosphere before thelevel of the water in the chamber reaches the ends of the smallsilencing pipe or pipes therein and any bubbling or hissing that may becaused by the water .level uncovering the lower end or ends of the "lastmentioned pipe or pipes is effectually silenced by the inclosing wall ofipe whichextends above the highest water l evel and terminates asalready mentioned in a silencerfif so desired. a I 7 In order that thesaid invention may be clearly understood and .ireadilycarried intoSpecification of Letters latent.

, Patented Oct. 16, 19 17.

Application filed. May 24, 1915. Serial No. 30,185.-

eflect the same is described by way of ex ample with reference to theaccompanying diagrammatic-drawings, in which Figure l is a longitudinalsection of a flushing cistern showing the invention applied to a siphonhaving a vertical, siphon operating cylinder. Fig; 2-is a similar viewshowing the invention applied to a siphon having a horizontal siphonoperating cylinder and the air pipe leading to the atmosphere throughthe intervention of a silencer. Fig. 3 shows the invention applied to abell siphon. f

Fig. 4 is a similar View showing the invention. applied to ,a type ofvalveless bell siphon, and y V Fig. 5 shows a modification in which theair pipe enters the short leg of the siphon. A indicates the siphon, B,B, B the silencing pipes, C the air pipe, D the silencer, E the highestwater level and F the lowest water'level.

In the exa nplesshown in Figs. 1 and 2 i jects into a casing or chamber0 with the lower ends; occupying aposition that is somewhatbelow thelower end of the pipe 0.; The'upper end of .this pipe extends above thehighest'water level and may open directly to the atmosphere as shown inFig.

lorif desired, may be fitted with a silencer D; Fig. 2. In the exampleshown, this silencer comprises a casting containing two perforatedpipesd d separated from one another by a diaphragm (Z which is formed withperforations outside the pipes d d and causes the entering air to travelin the direction indicated by the arrows. This silencer is shown by wayof example only and any other appropriate type may be used. The pipes B,B, B 'areformed at their upper portions with small apertures or pinholes I) and any suitable means can be employed for operating the siphonsuch for example asa piston mounted in a cylinder which may be verticalas shown at a in Fig.1 or horizontal as shown ata in Fig. 2', waterentering through the bottom of the cylinder a or byway of an aperture orvalve a in the cylinder a. The chamber or casingc can be made of anyshape to suit the. design of the cistern and if desi-red'can be castin'a piece with the siphon operating cylindera or a, the bottom or lowerpart of the chamfreely in and out and always be at the same level as thewater in the cistern. In'the ex ample shown in Figs. 8 and 4:, Aindicates a a bell that'con'stitutes the short leg of the siphon andalso serves as all-OPEIablI-lg cylinder. One of the silencing plpes Bopens into the top of such bell and extends downward'ly outside thechamber orcas'in'g 0 which is open at 0 and may be formed in a piecewith the bell. Projecting from the top of suchcasing is the air pipe Cwhich may be constructed and arranged to operate in the mannerpreviously described. -In these examples only one of the silencing pipesB is shownbut if desired :two or more of such pipes may be used as shownwith reference to Figs. 1-and'2n- Fig. 5 shows an example in which thesupplementary chamber-or casing c is dispensed with, the air pipe Centering the short leg of the si-pl ion at (7 just above thes'iphoninlet aperture 0 In thiscase the lower end of the air pipe is open andterminates at or about theleve'l of the siphon inlet aperture.

I Vhen the silencing pipes are used in connection with a supplementarychamber 0 the small pin holes Y) may be dispensedavi-th.

I claim: Y; T 1

1. In a flushing-cistern, a siphon, a'pipe connected at one end to saidsiphon and having an opening in its other end exposed to the rising andfallingaction of the body of the flushing-liquid but above the level ofthe'influx of thesip'hon, and a pipe open at one end to the atmospherefor supplying air to the first pipe through said openingwhen the latteris uncovered during flushing;

2. In a flushing-cistern, asiphon, a pipe connected thereto, said pipehaving an ever open air-inlet aperture above the *normal water-level andhaving an opening in its other end above the level of the influx of thesiphon and a pipe openat one end tothe atmosphere for supplying airto-the first pipe through said opening when'the latter is uncoveredduring flushing.

I 3. In a flushing-cistern, a-siphon, a pipe connected-thereto, saidpipe haVin-g an everopen air-inlet aperture above the normal water-leveland having an opening in "its other end exposed to the rising andfalling action of the body of the flushing-liquid but above the level ofthe influx of theasiphon, anda pipe open at one end to the-atmospherefor supplying air to f=the-first pipe through said opening when the'latter' is uncovered'during flushing. 4

- 4. In afiushing-cistern, a siphon, a pipe connected at one. end tosaid: siphon, and having an opening in its other end exposed to therising and falling action of the body ofthe flushing liquid but :abovethe level of the influx of the siphon, and a pipe having one end open tothe atmosphere above the norher a being open to allow the Water to'flowmal water-leveland its other end positioned .to allow air to pass intothe first pipe through" said opening when the latter is nncovered[during flushing.

5; In a'flushing-clstern, a slphonfa' pipe iconn'eoted atone end to saidsiphon and havand a silencing-de\*ic e .-at the inlet-end ofthe rair-supplyingpipe. i

6. In awflushin cistenn, a siphon, a pinrality of pipes connected attheir uppe'r ends to said; siphon and having openings in their lowerlendsaboue the level of the influx bf said siphon, each or said pipeshaving bore of relatively small diameter andjha ing an ever-openair-inlet abore the normal water.- level, and iawpipeiopen at one end tothe atmospherefor supplying air "to said pipes through said openingswhen the latter are uncovered during flushing.

7.?Ina flushing-cistern, a siphon,- a plurality ofpipes connected attheir upper ends to said siphon and having openings in their lower endsexposed *to the rising and falling action of the body of thefiushingeliqn id, but above the level off the influx of the siphon, eachof said pipes having a bore of relatively small diameter and having anever open ra-ireinle't sabovelthe normal water-level, and a pipehavingone end open to the atmosphere above the normal water-level and itsother-end positioned to allow air to pass into said pipes through saidopeningswhen the'flnshing liquid but abo e the level ofthe influx-of thesiphon, a'chamber in com munication with the cistern and receiving thelo-wer'eind of said pipefand a pipe open at oneend to the atmosphereandconnected at its other end to said chamber for supply a ir:theretoand thereby to the first pipe throughflsaid opening when the latter isuncoa ered' during flushing.

9. 1m a flushing-cistern, a siphon, a plurality of pipes connected attheir upper ends to said sip-hon and having openings in their lower endsexposed to the rising and falling action vof the body of the flushingliquid but above the level of the influx of said siphon, a chamber incommunicationwith the cistern and receiving the lower ends of said pipesand a pipe open atone end tothe atmosphere and connected at its otherend to said chamber for supplying air thereto and thereby to said pipesthrough said openings when the latter are uncovered during flushing.

10. In a flushing-cistern, a siphon, a plurality of pipes connected attheir upper ends to said siphon and having openings in their lower endsabove the level of the influx of said siphon, each of said pipes havinga bore of relatively small diameter and having an ever-open air-inletabove the normal waterlevel, a chamber in communication with the cisternand receiving the lower ends of said pipes, and a pipe open at one endto the atmosphere and connected at its other end to said chamber forsupplying air thereto and thereby to said pipes through said openingswhen the latter are uncovered during flushing.

11. In a flushing-cistern, a siphon, a pipe connected at one end to saidsiphon, and having an opening in its other end exposed to the rising andfalling action of the body of the flushing-liquid but above the level ofthe influx of said siphon, a chamber in communication with the cisternand receiving the lower end of said pipe, and a pipe open at one end tothe atmosphere and connected at its other end to said chamber above saidopening for supplying air to the chamber and thereby to the first pipethrough said opening when the latter is uncovered during flushing.

12. In a flushing-cistern, a siphon, a plurality of pipes connected attheir upper ends to said siphon and having openings in their lower endsexposed to the rising and falling action of the body of theflushing-liquid but above the level of the influx of said siphon, achamber in communication with the cistern and receiving the lower endsof said pipes, and a pipe open at one end to the atmosphere andconnected at its other end to said chamber above said openings forsupplying air to the chamber and thereby to said pipes through saidopenings when the latter are uncovered during flushing.

13. In a flushing-cistern, a siphon, a plurality of pipes connected attheir upper ends to said siphon and having openings in their lower endsexposed to the rising and falling action of the body of theflushing-liquid but above the level of the influx of said siphon, eachof said pipes having a bore of relatively small diameter and having aneveropen air-inlet above the normal water-level, a chamber incommunication with the cistern and receiving the lower ends of saidpipes, and a pipe open at one end to the atmosphere and connected at itsother end to said chamber above the said openings for pipes, a pipe openat one end to the atmosphere and connected at its other end to saidchamber for supplying air thereto and thereby to said pipes through saidopenings when the latter are uncovered during flushing, and asilencing-device at the inlet end of the air-supplying pipe.

In a flushing-cistern, a bell constituting the short leg of a siphon, achamber in proximity to the inlet-edge of said bell and in communicationwith the cistern, a pipe connected at one end to the top of said belland at its other end to said chamber, the chamber-opening of said pipebeing exposed to the rising and falling action of the body of theflushing-liquid but above the level of the inlet to said bell, and apipe open at one end to the atmosphere and connected at its other end tosaid chamber for supplying air thereto and thereby to the first pipethrough said opening when the latter is uncovered during flushing.

16. In a flushing-cistern, a bell constituting the short leg of asiphon, a chamber in proximity to the inlet-edge of said bell and incommunication with the cistern, a pipe connected at one end to the topof said bell and at its other end to said chamber, the chamber-openingof said pipe being exposed to the rising and falling action of the bodyof the flushing-liquid but above the level of the inlet to said bell,said pipe having an ever-open air-inlet above the normal water-level,and a pipe open at one end to the atmosphere and connected at its otherend to said chamber for supplying air thereto and thereby to the firstpipe through said opening when the latter is uncovered during flushing.

In testimony that I claim the foregoing as my invention, I have signedmy name in the presence of the subscribing witnesses this 13th day ofMay, 1915.

RUDOLPH HENRIK PAUS.

Witnesses WILFRID DUNN, RD. B. NIoHoLLs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

